Battery module and battery pack including the same and vehicle including the same

Abstract

A battery module, a battery pack including the same, and an automobile are disclosed. A battery module according to one embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked; a case in which the battery cell stack is housed and a first exhaust port is formed for discharging gas; an exhaust path member mounted on the case to provide a gas discharge path and configured to discharge gas but prevent the leakage of flames; and a cover coupled to the case to cover the exhaust path member and having a second exhaust port formed for discharging gas that has moved through the exhaust path member, wherein the exhaust path member is spaced apart from the first exhaust port and the second exhaust port.

Description

Technology Field

[0001] The present invention relates to a battery module, a battery pack including the same, and an automobile, and more specifically, to a battery module in which gas is emitted but flames are not emitted when a battery cell ignites, a battery pack including the same, and an automobile. Background Technology

[0002] With the increasing technological development and demand for mobile devices, the demand for secondary batteries as an energy source is rapidly rising. While nickel-cadmium batteries or hydrogen-ion batteries were conventionally used as secondary batteries, lithium-ion batteries are now widely used because they exhibit almost no memory effect compared to nickel-based batteries, allowing for free charging and discharging, have a very low self-discharge rate, and high energy density.

[0003] These lithium secondary batteries primarily use lithium-based oxides and carbon materials as the positive and negative active materials, respectively. The lithium secondary battery comprises an electrode assembly in which a positive plate and a negative plate, each coated with the positive and negative active materials, are arranged with a separator in between, and an outer casing, namely a battery case, that seals and houses the electrode assembly together with an electrolyte.

[0004] Lithium secondary batteries consist of a positive electrode, a negative electrode, a separator interposed between them, and an electrolyte. Depending on the type of positive and negative active material used, they are classified into lithium-ion batteries (LIB), lithium-polymer batteries (PLIB), etc. Typically, the electrodes of these lithium secondary batteries can be formed by applying a positive or negative active material to a current collector, such as an aluminum or copper sheet, mesh, film, or foil, and then drying it.

[0005] Lithium secondary batteries are currently in the spotlight due to their advantages, such as high operating voltage and significantly higher energy density, but because they use organic electrolytes, if the lithium secondary battery is overcharged, it causes overcurrent and overheating, which in severe cases can lead to explosions or fires caused by ignition.

[0006] Various types of secondary batteries include a battery module in which a plurality of battery cells are stacked and placed into a case equipped with a case capable of protecting the battery cells, and a battery pack containing a plurality of battery modules.

[0007] In this case, if a flame occurs in at least one of the battery cells inside the battery module case, and the flame leaks out of the battery module case, it can not only spread to other battery modules but also create a dangerous situation for the user. For example, if a flame occurs in a battery cell while the battery module or battery pack is installed in an electric vehicle and leaks to the outside, there is a problem in that the driver operating the electric vehicle may suffer burns or be put in a dangerous situation. Prior art literature

[0008] Republic of Korea Published Patent Publication No. 10-2016-0020234 (Publication Date: February 23, 2016) The problem to be solved

[0009] Accordingly, the technical problem to be solved by the present invention is to provide a battery module that allows gas to be discharged to the outside of the case while preventing the leakage of flames when a flame occurs in a battery cell, a battery pack including the same, and an automobile. means of solving the problem

[0010] According to one aspect of the present invention, a battery module may be provided comprising: a battery cell stack in which a plurality of battery cells are stacked; a case in which the battery cell stack is housed and a first exhaust port is formed for discharging gas; an exhaust path member mounted on the case to provide a gas discharge path and configured to discharge gas but prevent the leakage of flame; and a cover coupled to the case to cover the exhaust path member and having a second exhaust port formed for discharging gas that has moved through the exhaust path member, wherein the exhaust path member is spaced apart from the first exhaust port and the second exhaust port.

[0011] In addition, the first exhaust port formed in the case and the second exhaust port formed in the cover are formed in opposite directions to each other, and the gas can flow from the first exhaust port through the exhaust path member to the second exhaust port.

[0012] And, the above case includes a lower cover in which the battery cell stack is housed; a plurality of mounting grooves in which the exhaust path member is mounted and the first discharge port is formed, which are coupled to the lower cover, and the cover is coupled to the upper cover, and the exhaust path member may be located between the cover and the upper cover.

[0013] In addition, the exhaust path member may be formed by connecting a plurality of unit path members to each other.

[0014] And, the unit path member comprises: an upper partition member having a length corresponding to the case and having a plurality of first through holes formed therein for the gas to pass through; a lower partition member coupled to the upper partition member at the lower side of the upper partition member and having a plurality of second through holes formed therein for the gas to pass through; and a connecting member coupled to the upper partition member and the lower partition member, wherein the first through holes and the second through holes may be located in the same direction.

[0015] Additionally, the above-mentioned connecting member includes a first connecting member and a second connecting member, wherein one of the plurality of unit path members has a first connecting member and another adjacent unit path member has a second connecting member, and the first connecting member and the second connecting member can be rotatably connected to each other.

[0016] In addition, the plurality of unit path members may be arranged in a zigzag pattern based on the first through hole and the second through hole, such that the first through hole and the second through hole of any one of the plurality of unit path members and the first through hole and the second through hole of an adjacent unit path member are arranged in opposite directions to each other.

[0017] In addition, a plurality of third through holes may be formed in the above-mentioned connection portion to allow the gas to pass through.

[0018] And, the upper partition part comprises a straight section formed in a straight line; a pair of protrusions each protruding from both ends of the straight section; and a shielding part extending from the straight section and connecting the pair of protrusions, wherein the first through hole may be formed in only one of the pair of protrusions.

[0019] In addition, the lower partition may be formed with the same shape as the upper partition.

[0020] In addition, the first connecting portion may include a connecting plate having the third through hole formed therein; a first pinhole portion formed at one end of the connecting plate to be connected to the upper partition portion and the lower partition portion; and a second pinhole portion formed at the other end of the connecting plate to be connected to the second connecting portion.

[0021] In addition, a first connecting pin may be connected to the first pinhole portion at the center of the upper partition portion and the lower partition portion, and a second connecting pin may be connected to the second pinhole portion while the first connecting portion and the second connecting portion overlap.

[0022] And, the second connecting part may be formed with the same shape as the first connecting part.

[0023] In addition, the exhaust path member may be configured to be expandable by rotating the first connecting part and the second connecting part around the first connecting pin and the second connecting pin as a rotation axis.

[0024] Meanwhile, according to another aspect of the present invention, a battery pack including the aforementioned battery module may be provided, and a vehicle including the battery module may also be provided. Effects of the invention

[0025] The embodiments of the present invention have the effect of preventing the leakage of flames while allowing gas to be discharged to the outside of the case by an exhaust path member mounted on the case when a flame occurs in a battery cell. Brief explanation of the drawing

[0026] FIG. 1 is a combined perspective view of a battery module according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of a battery module according to one embodiment of the present invention. FIG. 3 is a perspective view of a battery module with the cover removed according to one embodiment of the present invention. FIG. 4 is a perspective view of an exhaust path member in a battery module according to one embodiment of the present invention. FIG. 5 is an exploded perspective view of a unit path member of an exhaust path member in a battery module according to one embodiment of the present invention. FIG. 6 is a combined perspective view of the unit path member of FIG. 5. FIG. 7 is a perspective view of the exhaust path member of FIG. 4 in a folded state. FIG. 8 is a perspective view illustrating another embodiment of FIG. 3. FIG. 9 is a perspective view illustrating another embodiment of FIG. 3. Specific details for implementing the invention

[0027] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0028] In the drawings, the size of each component or specific part constituting the component is exaggerated, omitted, or schematically depicted for convenience and clarity of explanation. Accordingly, the size of each component does not entirely reflect its actual size. If it is determined that a detailed description of related known functions or configurations could unnecessarily obscure the essence of the invention, such description shall be omitted.

[0029] As used in this specification, the terms "combination" or "connection" include not only cases where one member and another member are directly joined or directly connected, but also cases where one member is indirectly joined or indirectly connected to another member through a connecting member.

[0030] FIG. 1 is an assembled perspective view of a battery module according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a battery module according to an embodiment of the present invention, FIG. 3 is a perspective view of a battery module according to an embodiment of the present invention with the cover removed, FIG. 4 is a perspective view of an exhaust path member in a battery module according to an embodiment of the present invention, FIG. 5 is an exploded perspective view of a unit path member of the exhaust path member in a battery module according to an embodiment of the present invention, FIG. 6 is an assembled perspective view of the unit path member of FIG. 5, FIG. 7 is a perspective view of the exhaust path member of FIG. 4 in a folded state, FIG. 8 is a perspective view illustrating another embodiment of FIG. 3, and FIG. 9 is a perspective view illustrating yet another embodiment of FIG. 3.

[0031] Referring to the drawings, a battery module (10) according to one embodiment of the present invention includes a battery cell stack (100), a case (200), an exhaust path member (300), and a cover (400).

[0032] A battery cell stack (100) is configured by stacking a plurality of battery cells equipped with electrode leads. The battery cells may have various structures, and the plurality of battery cells may be stacked in various ways. The electrode leads provided in the battery cells may be made of a conductive material and serve as a type of terminal that is exposed to the outside and connected to an external device.

[0033] The electrode leads may include a positive electrode lead and a negative electrode lead. The positive electrode lead and the negative electrode lead may be positioned opposite each other with respect to the longitudinal direction of the battery cell, or the positive electrode lead and the negative electrode lead may be positioned in the same direction with respect to the longitudinal direction of the battery cell.

[0034] The positive electrode lead and the negative electrode lead can be made of various materials; for example, the positive electrode lead can be made of aluminum, and the negative electrode lead can be made of copper.

[0035] The electrode leads can be electrically coupled to a busbar (not shown). The battery cell may have a structure in which multiple unit cells arranged in the order of positive plate-separator-negative plate, or bi-cells arranged in the order of positive plate-separator-negative plate-separator-positive plate-separator-negative plate, are stacked according to the battery capacity.

[0036] A battery cell stack (100) may be provided with a plurality of cartridges (not shown) for storing each battery cell. Each cartridge (not shown) may be manufactured by injection molding of plastic, and a plurality of cartridges (not shown) may be stacked, each having a storage portion formed to store a battery cell.

[0037] A cartridge assembly in which a plurality of cartridges (not shown) are stacked may be provided with a connector element or a terminal element. The connector element may include various forms of electrical connection components or connecting members for connecting to, for example, a BMS (Battery Management System, not shown) capable of providing data regarding the voltage or temperature of a battery cell.

[0038] In addition, the terminal element includes a positive terminal and a negative terminal as a main terminal connected to the battery cell, and the terminal element is equipped with a terminal bolt so that it can be electrically connected to the outside. Meanwhile, the battery cell can have various shapes.

[0039] Referring to FIGS. 1 and 2, a battery cell stack (100) is housed in a case (200), and a first outlet (221) through which gas is discharged is formed. For example, the case (200) may be provided to surround the battery cell stack (100). The case (200) surrounds the entire battery cell stack (100) and thereby protects the battery cell stack (100) from external vibrations or shocks.

[0040] The case (200) can be formed in a shape corresponding to the shape of the battery cell stack (100). For example, if the battery cell stack (100) is provided in a cuboid shape, the case (200) can also be provided in a cuboid shape corresponding to this.

[0041] The case (200) may be manufactured, for example, by bending a metal plate, and may be manufactured as a single piece or as a separate piece. Here, the case (200) may be made of a steel material capable of withstanding flames, but the material of the case (200) is not limited to steel and may include various metals.

[0042] Additionally, the case (200) may include a mica plate formed of mica that has both thermal insulation and heat resistance to prevent the leakage of flames. Here, the mica plate may include not only a flat mica plate but also a shape that is a mixture of flat and curved surfaces.

[0043] Referring to FIGS. 1 and 2, the case (200) may include a lower cover (210) and an upper cover (220). A battery cell stack (100) is housed in the lower cover (210).

[0044] The upper cover (220) is coupled to the lower cover (210). Referring to FIG. 2, the upper cover (220) has a plurality of mounting grooves (222) into which an exhaust path member (300) is mounted, and a first exhaust port (221). The exhaust path member (300) can be coupled to the mounting grooves (222). Then, gas generated from the battery cell stack (100) inside the case (200) is configured to move to the exhaust path member (300) through the first exhaust port (221) of the upper cover (220).

[0045] A through-hole (not shown) may be formed in the case (200) through which the aforementioned connector element or terminal element can be exposed to the outside. That is, the connector element or terminal element may be electrically connected to a predetermined external part or component, and a through-hole may be formed in the case (200) so that such electrical connection is not obstructed by the case (200).

[0046] The exhaust path member (300) is mounted on the case (200) to provide a gas discharge path, and is configured to discharge gas but prevent the leakage of flames. Here, referring to FIGS. 2 and 3, the exhaust path member (300) is spaced apart from the first discharge port (221), and likewise, the exhaust path member (300) is also spaced apart from the second discharge port (410).

[0047] Referring to FIG. 5, the exhaust path member (300) may be formed by connecting a plurality of unit path members (300a, 300b) to each other. Additionally, the unit path members (300a, 300b) may include an upper partition member (310), a lower partition member (320), and a connecting member (330).

[0048] The upper partition (310) has a length corresponding to the case (200), and a plurality of first through holes (316) are formed in the upper partition (310) to allow gas to pass through. Here, the upper partition (310) may be configured to include a straight section (311), a pair of protrusions (312), and a shielding section (313).

[0049] Referring to FIG. 5, the straight section (311) is formed in a long straight shape. A coupling hole (315) into which a first coupling pin (500) is coupled may be formed in the straight section (311). A pair of protrusions (312) each protrude from both ends of the straight section (311). Here, the first through hole (316) is formed in only one of the pair of protrusions (312).

[0050] A coupling projection (317) and a coupling groove (318) may be formed on each of the pair of protrusions (312), and the upper partition (310) and the lower partition (320) may be coupled by the coupling projection (317) and the coupling groove (318) formed on each of the pair of protrusions (312).

[0051] The shielding section (313) extends from the straight section (311) and connects a pair of protrusions (312). The shielding section (313) blocks gas and flames and has the function of guiding the gas to move toward the first through hole (316).

[0052] And, the lower partition (320) is connected to the upper partition (310) at the lower side of the upper partition (310), and a plurality of second through holes (326) are formed in the lower partition (320) to allow gas to pass through. Here, the first through hole (316) and the second through hole (326) are formed to be located in the same direction.

[0053] Referring to FIG. 5, the lower partition (320) is formed with the same shape as the upper partition (310). That is, the lower partition (320) may include a straight section (321), a pair of protrusions (322), and a shield (323) so as to correspond to the straight section (311), a pair of protrusions (312), and a shield (313) of the upper partition (310). Additionally, the lower partition (320) may include a coupling hole (325), a coupling protrusion (327), and a coupling groove (328) so as to correspond to the coupling hole (315), a coupling projection (317), and a coupling groove (318) of the upper partition (310).

[0054] Here, if the upper partition (310) and the lower partition (320) are formed with the same shape, standardization of the shape becomes possible, so that both the upper partition (310) and the lower partition (320) can be manufactured with a single mold, thereby reducing mold costs and making manufacturing easier.

[0055] And, the connecting part (330) is connected to the upper partition part (310) and the lower partition part (320). And, a plurality of third through holes (336) are formed in the connecting part (330) to allow gas to pass through.

[0056] Here, the connecting portion (330) of one of the multiple unit path members (300a, 300b) and the connecting portion (330) of an adjacent unit path member (300b) are connected to each other.

[0057] For example, the connecting part (330) may include a first connecting part (331) and a second connecting part (332). Referring to FIGS. 5 and 6, one of the plurality of unit path members (300a) has a first connecting part (331), and an adjacent unit path member (300b) has a second connecting part (332), and the first connecting part (331) and the second connecting part (332) may be rotatably connected to each other.

[0058] Referring to FIG. 5, the first connecting part (331) may be configured to include a connecting plate (333), a first pinhole part (334), and a second pinhole part (335), just like the first connecting part (332).

[0059] The connecting plate (333) is formed as a straight-shaped member, and a third through hole (336) is formed in the connecting plate (333). That is, gas discharged through the first outlet (221) of the upper cover (220) moves along a path such as the arrow in FIG. 4 and is discharged through the second outlet (410) formed in the cover (400). Here, the gas moves through the first through hole (316) of the upper partition part (310) and the second through hole (326) of the lower partition part (320), and also moves while passing through the third through hole (336) of the connecting plate (333).

[0060] Here, the plurality of unit path members (300a) may be arranged in a zigzag pattern based on the first through hole (316) and the second through hole (326) so that the first through hole (316) and the second through hole (326) of one of the plurality of unit path members (300a) and the first through hole (316) and the second through hole (326) of an adjacent unit path member (300a) are arranged in opposite directions to each other.

[0061] A first pinhole portion (334) is formed at one end of a connecting plate (333) to be connected to an upper partition portion (310) and a lower partition portion (320). A first connecting pin (500) can be connected to the first pinhole portion (334). That is, when the first pinhole portion (334) is aligned with the connecting hole (315) of the upper partition portion (310) and the connecting hole (325) of the lower partition portion (320), the first connecting pin (500) is inserted into the connecting hole (315), the first pinhole portion (334), and the connecting hole (325).

[0062] The second pinhole portion (335) is formed at the other end of the connecting plate (333) to be connected to the second connecting portion (332).

[0063] That is, in FIG. 5, a first connecting pin (500) is connected to a first pinhole portion (334) at the center of the upper partition portion (310) and the lower partition portion (320), and a second connecting pin (600) is connected to a second pinhole portion (335) in a state where the first connecting portion (331) of one of the multiple unit path members (300a, 300b) and the second connecting portion (332) of an adjacent unit path member (300b) overlap, so that two unit path members (300a, 300b) are connected to each other as in FIG. 6. And, in this way, multiple unit path members (300a) can be connected as in FIG. 4.

[0064] Additionally, the second connecting part (332) can be formed with the same shape as the first connecting part (331). Here, if the second connecting part (332) is formed with the same shape as the first connecting part (331), standardization of the shape becomes possible, allowing both the second connecting part (332) and the first connecting part (331) to be manufactured using a single mold. This results in reduced mold costs and easier manufacturing.

[0065] Preferably, the first connecting part (331) and the second connecting part (332) can rotate around the first connecting pin (500) and the second connecting pin (600) as a rotation axis, thereby allowing the exhaust path member (300) to be configured to be extendable. For example, as shown in FIGS. 3 and 4, the exhaust path member (300) may be configured to unfold, or as shown in FIG. 7, it may be configured to fold so as to be completely closed.

[0066] Referring to FIGS. 2 and 3, the cover (400) is coupled to the case (200) so as to cover the exhaust path member (300), and a second exhaust port (410) is formed in the cover (400) so that gas moving through the exhaust path member (300) can be discharged. Here, the cover (400) is coupled to the upper cover (220), and the exhaust path member (300) is located between the cover (400) and the upper cover (220).

[0067] That is, the gas generated inside the case (200) moves to the exhaust path member (300) through the first exhaust port (221) of the upper cover (220), and is discharged to the outside through the second exhaust port (410) of the cover (400) from the exhaust path member (300).

[0068] Here, the first exhaust port (221) formed in the case (200) and the second exhaust port (410) formed in the cover (400) are formed in opposite directions. Since the flame basically moves upward, according to the structure described above, even if the flame rises upward through the first exhaust port (221), it cannot move because it is blocked by the exhaust path member (300); therefore, the flame cannot move to the second exhaust port (410) formed in the opposite direction to the first exhaust port (221).

[0069] Accordingly, gas can flow from the first outlet (221) into the exhaust path member (300), move through the exhaust path member (300), and be discharged to the second outlet (410), but flame cannot be discharged through the second outlet (410).

[0070] Hereinafter, the operation and effect of a battery module (10) according to one embodiment of the present invention will be described with reference to the drawings.

[0071] Referring to FIGS. 1 and 2, a battery cell stack (100) is housed inside a case (200). Referring to FIG. 3, a first exhaust port (221) is formed in the upper cover (220) of the case (200), and an exhaust path member (300) is mounted in the mounting groove (222) of the upper cover (220).

[0072] And, referring to FIGS. 2 and FIGS. 4, the second outlet (410) of the cover (400) is formed in the opposite direction, far from the first outlet (221) of the upper cover (220). Here, the exhaust path member (300) is spaced apart from the first outlet (221) and the second outlet (410).

[0073] The exhaust path member (300) is formed such that a plurality of unit path members (300a, 300b) are connected to each other through a connecting part (330), and as shown in FIG. 4, gas moving to the exhaust path member (300) through the first outlet (221) moves through the first through hole (316), the second through hole (326), and the third through hole (336) and is discharged through the second outlet (410).

[0074] The case (200) may be formed of a metal plate or a mica plate, and since the first discharge port (221) and the second discharge port (410) are located in opposite directions, the flame generated by ignition in the battery cell inside the case (200) cannot be discharged.

[0075] As a result, when a flame occurs in the battery cell, the gas is discharged outside the case (200), but the flame leakage is prevented.

[0076] Referring to FIGS. 8 and FIGS. 9, the exhaust path member (300) can be provided in various ways. Referring to FIGS. 8, if the number of battery cells or battery cell stacks (100) is smaller than in FIGS. 3, or if the length of the battery cells or battery cell stacks (100) is short and the size of the case (200) is small, the spacing between the multiple unit path members (300a) can be formed narrowly. Also, referring to FIGS. 9, if the explosive force of the battery cells is weaker than in FIGS. 3, a low rigidity structure can be applied, so the number of unit path members (300a) can be reduced to reduce costs.

[0077] However, FIGS. 8 and 9 are examples of one modified embodiment, and the battery module (10) according to one embodiment of the present invention may be implemented in more variations than this.

[0078] Meanwhile, a battery pack (not shown) according to one embodiment of the present invention may include one or more battery modules (10) according to one embodiment of the present invention as described above. In addition, the battery pack (not shown) may further include, in addition to the battery modules (10), a housing for housing the battery modules (10), and various devices for controlling the charging and discharging of the battery modules (10), such as a BMS, a current sensor, a fuse, etc.

[0079] Meanwhile, a vehicle (not shown) according to one embodiment of the present invention may include the aforementioned battery module (10) or battery pack (not shown), and the battery pack (not shown) may include the battery module (10). Furthermore, the battery module (10) according to one embodiment of the present invention may be applied to the vehicle (not shown), for example, a specific vehicle (not shown) configured to use electricity, such as an electric vehicle or a hybrid vehicle.

[0080] Although the present invention has been described above by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs. Explanation of the symbols

[0081] 10 : Battery module 100 : Battery cell stack 200 : Case 210 : Bottom cover 220: Upper cover 221: First discharge port 222 : Mounting groove 300 : Exhaust path absence 300a, 300b: Unit path member 310: Upper partition section 311: Straight section 312: Protrusion 313: Shield part 315: Connection hole 316 : First through hole 317 : Connecting projection 318 : Connecting groove 320 : Lower partition part 321 : Straight section 322 : Protrusion 323 : Shield part 325 : Connection hole 326 : Second through hole 327 : Connecting projection 328 : Joining groove 330 : Connecting part 331: First connection part 332: Second connection part 333: Connecting plate 334: First pinhole section 335: Second pinhole section 336: Third through hole 400: Cover 410: Second outlet 500 : 1st connecting pin 600 : 2nd connecting pin

Claims

Claim 1 A battery cell stack in which a plurality of battery cells are stacked; a case in which the battery cell stack is housed and a first exhaust port is formed for discharging gas; an exhaust path member mounted on the case to provide a gas discharge path, configured to discharge the gas but prevent the leakage of flames; and a cover coupled to the case to cover the exhaust path member and having a second exhaust port formed for discharging gas that has moved through the exhaust path member, wherein the exhaust path member is spaced apart from the first exhaust port and the second exhaust port, and the exhaust path member is formed by connecting a plurality of unit path members to each other, and the unit path member comprises: an upper partition member having a length corresponding to the case and having a plurality of first through holes formed to allow the gas to pass through; and a lower partition member coupled to the upper partition member at the lower side of the upper partition member and having a plurality of second through holes formed to allow the gas to pass through. A battery module comprising a connecting portion coupled to the upper partition portion and the lower partition portion, wherein the first through hole and the second through hole are located in the same direction, and the gas moves through the first through hole of the upper partition portion and the second through hole of the lower partition portion. Claim 2 A battery module according to claim 1, wherein the first discharge port formed in the case and the second discharge port formed in the cover are formed in opposite directions to each other, and the gas flows from the first discharge port through the exhaust path member to the second discharge port. Claim 3 A battery module according to paragraph 2, wherein the case comprises: a lower cover in which the battery cell stack is housed; an upper cover coupled to the lower cover and having a plurality of mounting grooves in which the exhaust path member is mounted and the first discharge port formed therein, wherein the cover is coupled to the upper cover and the exhaust path member is located between the cover and the upper cover. Claim 4 delete Claim 5 delete Claim 6 A battery module according to claim 1, wherein the connecting portion comprises a first connecting portion and a second connecting portion, wherein one of the plurality of unit path members has the first connecting portion and another adjacent unit path member has the second connecting portion, and wherein the first connecting portion and the second connecting portion are rotatably connected to each other. Claim 7 A battery module according to claim 1, characterized in that the plurality of unit path members are arranged in a zigzag pattern based on the first through hole and the second through hole, such that the first through hole and the second through hole of any one of the plurality of unit path members and the first through hole and the second through hole of an adjacent unit path member are arranged in opposite directions. Claim 8 A battery module according to claim 7, wherein the connecting portion includes a first connecting portion and a second connecting portion, and the connecting portion has a plurality of third through holes formed therein to allow the gas to pass through. Claim 9 A battery module according to claim 1, wherein the upper partition portion comprises: a straight portion formed in a straight line; a pair of protrusions each protruding from both ends of the straight portion; and a shield portion extending from the straight portion and connecting the pair of protrusions, wherein the first through hole is formed in only one of the pair of protrusions. Claim 10 A battery module according to claim 9, characterized in that the lower partition is formed in the same shape as the upper partition. Claim 11 A battery module according to claim 8, wherein the first connecting portion comprises: a connecting plate having the third through hole formed therein; a first pinhole portion formed at one end of the connecting plate to be connected to the upper partition portion and the lower partition portion; and a second pinhole portion formed at the other end of the connecting plate to be connected to the second connecting portion, wherein a first connecting pin is connected to the first pinhole portion at the center of the upper partition portion and the lower partition portion, and a second connecting pin is connected to the second pinhole portion when the first connecting portion and the second connecting portion overlap. Claim 12 A battery module according to claim 11, characterized in that the second connecting part is formed in the same shape as the first connecting part. Claim 13 A battery module according to claim 12, characterized in that the exhaust path member is configured to be expandable by rotating the first connecting part and the second connecting part around the first connecting pin and the second connecting pin as a rotation axis. Claim 14 A battery pack comprising a battery module according to any one of paragraphs 1 through 3 and paragraphs 6 through 13. Claim 15 An automobile comprising a battery module according to any one of paragraphs 1 through 3 and paragraphs 6 through 13.

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